Following ticket consists of a problem description and existing configuration on the device.
Trouble Ticket Statement:
Client 1 is able to ping 188.8.131.52 but not the Web Server at 184.108.40.206. Initial troubleshooting shows and R1 does not have any BGP routes. R1 also does not show any active BGP neighbor.
Note: In the above ticket R1 and all others are able to ping 220.127.116.11 but not the Web Server only. This is because R1 is directly connected to 18.104.22.168 and BGP is not required in order to ping directly connected network and as soon as R1 knows about 22.214.171.124 network all other devices are also able to ping 126.96.36.199, since they are coming to R1 for any unknown route, because of default route propagate through R1’s OSPF (using ‘default-information originate always’ command). However Web Server is not accessible until BGP configured properly between R1 and ISP (188.8.131.52) because only then R1 will receive the information about Web Server’s network.
Following are the symptoms of above ticket.
1-No one is able to ping Web Server.
2-Client 1 and all others can ping upto 184.108.40.206.
3-“show route BGP”, you will not see any BGP route.
4-“show ip bgp neighbor” on R1, you will not see any active BGP neighbor.
The Fault Condition is related to which technology?
Correct Answer: C
On which device is the fault condition located?
Correct Answer: A
What is the solution of the fault condition?
A.Enable BGP synchronization
B.Change neighbor 220.127.116.11 remote-as 65002 statement to neighbor 18.104.22.168 remote-as 650001
C.Change neighbor 22.214.171.124 remote-as 65002 statement to neighbor 126.96.36.199 remote-as 650002
D.Change neighbor 188.8.131.52 remote-as 65002 statement to neighbor 184.108.40.206 remote-as 650001
Correct Answer: C
In this scenario you need to check bgp neighborship “show ip bgp sum”
The neighbor’s address in the neighbor command is wrong under router BGP. (use ipv4 Layer 3)
You need to delete the wrong neighbor statement and enter the correct neighbor address in the neighbor command (change 220.127.116.11 to 18.104.22.168)